Interrogation of intensity modulation fiber Bragg grating sensor based on loss-tunable corrugated long period fiber grating filter

Chia-Chin Chiang; Min-Yuan Hsieh

doi:10.1117/12.914386

30 January 2012 Interrogation of intensity modulation fiber Bragg grating sensor based on loss-tunable corrugated long period fiber grating filter

Chia-Chin Chiang, Min-Yuan Hsieh

Author Affiliations +

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83511F (2012) https://doi.org/10.1117/12.914386
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

Current study utilizes the corrugated long period fiber grating (CLPFG) edge filter and fiber Bragg grating (FBG) strain sensor to configure the high speed strain sensing system by intensity modulation. For static calibration, the FBG wavelength shift is linear with the modulated intensity by CLPFG while the linearity (R²) of the FBG intensity and strain is 0.994. For dynamic strain sensing, the performance of this system is good as the strain gage at 500Hz under the various strain fields. Experimental results also indicate that the optimal sensitivity is 11.08 mV/με.

Citation Download Citation

Chia-Chin Chiang and Min-Yuan Hsieh "Interrogation of intensity modulation fiber Bragg grating sensor based on loss-tunable corrugated long period fiber grating filter", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511F (30 January 2012); https://doi.org/10.1117/12.914386

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